\chapter{Annexe}
\section{Annexe 1}
\begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a11.png}
  \end{center}
\end{figure} 
\begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a12.png}
  \end{center}
\end{figure} 
\clearpage
\begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a13.png}
\end{center}
\end{figure} 

\section{Annexe 2}
\begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a21.png}
  \end{center}
\end{figure} 
  \begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a22.png}
  \end{center}
\end{figure} 
  \begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a23.png}
  \end{center}
\end{figure} 
  \begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a24.png}
  \end{center}
\end{figure} 
  \begin{figure}[!h] 
\begin{center}
  \includegraphics[scale=0.40]{a25.png}
\end{center}
\end{figure} 
